On Fri, Apr 02, 2021 at 04:24:03PM +0200, Christoph Hellwig wrote:
> Move the XFS_IFEXTENTS check from the callers into xfs_iread_extents to
> simplify the code.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> fs/xfs/libxfs/xfs_bmap.c | 82 ++++++++++++++++-----------------------
> fs/xfs/scrub/bmap.c | 9 ++---
> fs/xfs/xfs_bmap_util.c | 16 +++-----
> fs/xfs/xfs_dir2_readdir.c | 8 ++--
> fs/xfs/xfs_dquot.c | 8 ++--
> fs/xfs/xfs_iomap.c | 16 +++-----
> fs/xfs/xfs_qm.c | 8 ++--
> fs/xfs/xfs_reflink.c | 8 ++--
> 8 files changed, 62 insertions(+), 93 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index 5574d345d066ed..b8cab14ca8ce8d 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -1223,6 +1223,9 @@ xfs_iread_extents(
>
> ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
Since we now call xfs_iread_extents unconditionally, this assert will
trip every time someone wants to bmapi_read the extent data after the
extent data has been loaded in, because xfs_ilock_data_map_shared tells
callers they only need to take ILOCK_SHARED... right?
--D
> + if (ifp->if_flags & XFS_IFEXTENTS)
> + return 0;
> +
> if (XFS_IS_CORRUPT(mp, ifp->if_format != XFS_DINODE_FMT_BTREE)) {
> error = -EFSCORRUPTED;
> goto out;
> @@ -1278,11 +1281,9 @@ xfs_bmap_first_unused(
>
> ASSERT(xfs_ifork_has_extents(ifp));
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> lowest = max = *first_unused;
> for_each_xfs_iext(ifp, &icur, &got) {
> @@ -1330,11 +1331,9 @@ xfs_bmap_last_before(
> return -EFSCORRUPTED;
> }
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> if (!xfs_iext_lookup_extent_before(ip, ifp, last_block, &icur, &got))
> *last_block = 0;
> @@ -1353,11 +1352,9 @@ xfs_bmap_last_extent(
> struct xfs_iext_cursor icur;
> int error;
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> xfs_iext_last(ifp, &icur);
> if (!xfs_iext_get_extent(ifp, &icur, rec))
> @@ -3984,11 +3981,9 @@ xfs_bmapi_read(
>
> XFS_STATS_INC(mp, xs_blk_mapr);
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(NULL, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(NULL, ip, whichfork);
> + if (error)
> + return error;
>
> if (!xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got))
> eof = true;
> @@ -4468,11 +4463,9 @@ xfs_bmapi_write(
>
> XFS_STATS_INC(mp, xs_blk_mapw);
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - goto error0;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + goto error0;
>
> if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.icur, &bma.got))
> eof = true;
> @@ -4751,11 +4744,9 @@ xfs_bmapi_remap(
> if (XFS_FORCED_SHUTDOWN(mp))
> return -EIO;
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> if (xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) {
> /* make sure we only reflink into a hole. */
> @@ -5426,9 +5417,10 @@ __xfs_bunmapi(
> else
> max_len = len;
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS) &&
> - (error = xfs_iread_extents(tp, ip, whichfork)))
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> return error;
> +
> if (xfs_iext_count(ifp) == 0) {
> *rlen = 0;
> return 0;
> @@ -5914,11 +5906,9 @@ xfs_bmap_collapse_extents(
>
> ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL));
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> if (ifp->if_flags & XFS_IFBROOT) {
> cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
> @@ -6031,11 +6021,9 @@ xfs_bmap_insert_extents(
>
> ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL));
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> if (ifp->if_flags & XFS_IFBROOT) {
> cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
> @@ -6134,12 +6122,10 @@ xfs_bmap_split_extent(
> if (XFS_FORCED_SHUTDOWN(mp))
> return -EIO;
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - /* Read in all the extents */
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + /* Read in all the extents */
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> /*
> * If there are not extents, or split_fsb lies in a hole we are done.
> diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
> index 33559c3a4bc3d4..fb50ec9a4303a1 100644
> --- a/fs/xfs/scrub/bmap.c
> +++ b/fs/xfs/scrub/bmap.c
> @@ -449,11 +449,10 @@ xchk_bmap_btree(
>
> /* Load the incore bmap cache if it's not loaded. */
> info->was_loaded = ifp->if_flags & XFS_IFEXTENTS;
> - if (!info->was_loaded) {
> - error = xfs_iread_extents(sc->tp, ip, whichfork);
> - if (!xchk_fblock_process_error(sc, whichfork, 0, &error))
> - goto out;
> - }
> +
> + error = xfs_iread_extents(sc->tp, ip, whichfork);
> + if (!xchk_fblock_process_error(sc, whichfork, 0, &error))
> + goto out;
>
> /* Check the btree structure. */
> cur = xfs_bmbt_init_cursor(mp, sc->tp, ip, whichfork);
> diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> index e7d68318e6a55c..e7f9537634f3cf 100644
> --- a/fs/xfs/xfs_bmap_util.c
> +++ b/fs/xfs/xfs_bmap_util.c
> @@ -225,11 +225,9 @@ xfs_bmap_count_blocks(
>
> switch (ifp->if_format) {
> case XFS_DINODE_FMT_BTREE:
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, whichfork);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, whichfork);
> + if (error)
> + return error;
>
> cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
> error = xfs_btree_count_blocks(cur, &btblocks);
> @@ -471,11 +469,9 @@ xfs_getbmap(
> first_bno = bno = XFS_BB_TO_FSBT(mp, bmv->bmv_offset);
> len = XFS_BB_TO_FSB(mp, bmv->bmv_length);
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(NULL, ip, whichfork);
> - if (error)
> - goto out_unlock_ilock;
> - }
> + error = xfs_iread_extents(NULL, ip, whichfork);
> + if (error)
> + goto out_unlock_ilock;
>
> if (!xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) {
> /*
> diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c
> index 66deddd5e29698..477df4869d19bd 100644
> --- a/fs/xfs/xfs_dir2_readdir.c
> +++ b/fs/xfs/xfs_dir2_readdir.c
> @@ -258,11 +258,9 @@ xfs_dir2_leaf_readbuf(
> int ra_want;
> int error = 0;
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(args->trans, dp, XFS_DATA_FORK);
> - if (error)
> - goto out;
> - }
> + error = xfs_iread_extents(args->trans, dp, XFS_DATA_FORK);
> + if (error)
> + goto out;
>
> /*
> * Look for mapped directory blocks at or above the current offset.
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index bd8379b98374f8..83c5334fe978f2 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -748,11 +748,9 @@ xfs_dq_get_next_id(
> start = (xfs_fsblock_t)next_id / mp->m_quotainfo->qi_dqperchunk;
>
> lock_flags = xfs_ilock_data_map_shared(quotip);
> - if (!(quotip->i_df.if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(NULL, quotip, XFS_DATA_FORK);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(NULL, quotip, XFS_DATA_FORK);
> + if (error)
> + return error;
>
> if (xfs_iext_lookup_extent(quotip, "ip->i_df, start, &cur, &got)) {
> /* contiguous chunk, bump startoff for the id calculation */
> diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
> index e17ab7f42928a5..129a0bafb46c0d 100644
> --- a/fs/xfs/xfs_iomap.c
> +++ b/fs/xfs/xfs_iomap.c
> @@ -893,11 +893,9 @@ xfs_buffered_write_iomap_begin(
>
> XFS_STATS_INC(mp, xs_blk_mapw);
>
> - if (!(ip->i_df.if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
> - if (error)
> - goto out_unlock;
> - }
> + error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
> + if (error)
> + goto out_unlock;
>
> /*
> * Search the data fork first to look up our source mapping. We
> @@ -1208,11 +1206,9 @@ xfs_seek_iomap_begin(
> return -EIO;
>
> lockmode = xfs_ilock_data_map_shared(ip);
> - if (!(ip->i_df.if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
> - if (error)
> - goto out_unlock;
> - }
> + error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
> + if (error)
> + goto out_unlock;
>
> if (xfs_iext_lookup_extent(ip, &ip->i_df, offset_fsb, &icur, &imap)) {
> /*
> diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
> index 6fde318b9fed27..fd835a202c51eb 100644
> --- a/fs/xfs/xfs_qm.c
> +++ b/fs/xfs/xfs_qm.c
> @@ -1165,11 +1165,9 @@ xfs_qm_dqusage_adjust(
> if (XFS_IS_REALTIME_INODE(ip)) {
> struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
>
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
> - if (error)
> - goto error0;
> - }
> + error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
> + if (error)
> + goto error0;
>
> xfs_bmap_count_leaves(ifp, &rtblks);
> }
> diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
> index 725c7d8e44381b..13cd62b89c4e30 100644
> --- a/fs/xfs/xfs_reflink.c
> +++ b/fs/xfs/xfs_reflink.c
> @@ -1392,11 +1392,9 @@ xfs_reflink_inode_has_shared_extents(
> int error;
>
> ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
> - if (!(ifp->if_flags & XFS_IFEXTENTS)) {
> - error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
> - if (error)
> - return error;
> - }
> + error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
> + if (error)
> + return error;
>
> *has_shared = false;
> found = xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got);
> --
> 2.30.1
>
